Blockout Masking Labels

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Choose your industry sector:

Industrial

Laboratory

I need a

Types

Other

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Asset ID and Inventory Labels

Barcode and Lot Number Traceability Labels

Barcode and Serial Number Labels

Blockout Masking Labels

Branding and Pharmaceutical Product ID Labels

Branding and Product Identification Labels

Cable Identification Labels

Calibration Labels

Cap and Tube Labels

Cold and Cryogenic Labels

Compliance Labels

Component Labels

GHS, Warning and Instruction Labels

Hose and Pipe ID Labels

Label Sets for Clinical Studies and Trials

Labware Labels

Microscope Slide Labels

PCB Identification and Tracking Labels

Quality Control and Quarantine Labels

Rating Plate Labels

Sample Identification Labels

Sign and Seal Labels

Sterilisation Indicator Labels

Tamper-Evident Security Labels and Seals

Temporary Removable Labels

UL Labels

Warning, Safety and Instruction Labels

label to go on

Applications

Other

Don't know

Agricultural and Heavy Equipment

Autoclave and Sample Bags

Cables, Wires and Harnesses

Calibrated Devices

Cassettes

Chemical Containers and Oil Drums

Company Assets

Cryo Storage Boxes

Electronic Components 

Enclosures and Casings

Freezer Racks

Frozen Surfaces

Hard-to-stick-to Surfaces

Hoses (Industrial and Hydraulic)

HPLC Columns

IVF Straws

Lighting

Medical Devices

Medical Instruments and Devices

Microscope Slides

Outdoor Equipment

Parts and Assemblies

PCBs

Plastic and Glass Labware

Power Supplies and Batteries

Production Tracking

Pumps and Valves

Reagent Kits

Sheet Metal

Tubes and Vials

Well and Micro Plates

to withstand

Conditions

Other

Don't know

Abrasion

Autoclave and Sterilisation

Chemical Resistance

Chemicals and Solvents

Fire-Retardant and Self-Extinguishing

Freeze and Thaw

Fuels and Oils

Handling

Handling and Cleaning

Hot Water Bath

Indoor

Microscope Slide Staining

Outdoor

Outgassing

Powder Coating Process

Submersible, Saltwater and Liquids

Temperature: -196°C to +600°C

Transportation in Dry Ice

in the

Sectors

Other

Don't know

Aerospace and Avionics

Animal Health Laboratories

Automotive and Parts

Biotech Research Laboratories

Clinical Laboratories

Construction and Groundwork

Electronics and Electrical

Forensic Laboratories

Government Health Protection Agencies

Hospital Clinics and Medical Laboratories

HVAC

Industrial Manufacturer

Marine

Material and Product Testing Laboratories

Military and Defence

Museums

Oil, Petrol and Gas

Pharmaceutical R&D

Rail, Road and Transport

sector

Continue to configurator

Industrial

Laboratory

UL Labels Printing Printers & Software Complete Customer Care Advice

Configure your label

For pricing, samples or guidance, let's get started

Choose your industry sector:

Industrial

Laboratory

I need a

Types

Other

Don't know

Asset ID and Inventory Labels

Barcode and Lot Number Traceability Labels

Barcode and Serial Number Labels

Blockout Masking Labels

Branding and Pharmaceutical Product ID Labels

Branding and Product Identification Labels

Cable Identification Labels

Calibration Labels

Cap and Tube Labels

Cold and Cryogenic Labels

Compliance Labels

Component Labels

GHS, Warning and Instruction Labels

Hose and Pipe ID Labels

Label Sets for Clinical Studies and Trials

Labware Labels

Microscope Slide Labels

PCB Identification and Tracking Labels

Quality Control and Quarantine Labels

Rating Plate Labels

Sample Identification Labels

Sign and Seal Labels

Sterilisation Indicator Labels

Tamper-Evident Security Labels and Seals

Temporary Removable Labels

UL Labels

Warning, Safety and Instruction Labels

label to go on

Applications

Other

Don't know

Agricultural and Heavy Equipment

Autoclave and Sample Bags

Cables, Wires and Harnesses

Calibrated Devices

Cassettes

Chemical Containers and Oil Drums

Company Assets

Cryo Storage Boxes

Electronic Components 

Enclosures and Casings

Freezer Racks

Frozen Surfaces

Hard-to-stick-to Surfaces

Hoses (Industrial and Hydraulic)

HPLC Columns

IVF Straws

Lighting

Medical Devices

Medical Instruments and Devices

Microscope Slides

Outdoor Equipment

Parts and Assemblies

PCBs

Plastic and Glass Labware

Power Supplies and Batteries

Production Tracking

Pumps and Valves

Reagent Kits

Sheet Metal

Tubes and Vials

Well and Micro Plates

to withstand

Conditions

Other

Don't know

Abrasion

Autoclave and Sterilisation

Chemical Resistance

Chemicals and Solvents

Fire-Retardant and Self-Extinguishing

Freeze and Thaw

Fuels and Oils

Handling

Handling and Cleaning

Hot Water Bath

Indoor

Microscope Slide Staining

Outdoor

Outgassing

Powder Coating Process

Submersible, Saltwater and Liquids

Temperature: -196°C to +600°C

Transportation in Dry Ice

in the

Sectors

Other

Don't know

Aerospace and Avionics

Animal Health Laboratories

Automotive and Parts

Biotech Research Laboratories

Clinical Laboratories

Construction and Groundwork

Electronics and Electrical

Forensic Laboratories

Government Health Protection Agencies

Hospital Clinics and Medical Laboratories

HVAC

Industrial Manufacturer

Marine

Material and Product Testing Laboratories

Military and Defence

Museums

Oil, Petrol and Gas

Pharmaceutical R&D

Rail, Road and Transport

sector

Continue to configurator

Contact

Blockout masking Labels

CILS International’s blockout (cover-up) labels are essential for when confidentiality or correction is key.

Designed to obscure information beneath them, they are pivotal in labs and pharmaceutical environments where patient data, ingredient lists or outdated information must remain hidden.

They are used for the purpose of blind or double-blind studies and can also provide a quick fix for pre-labelled products with typos or inaccuracies. Featuring a high-opacity adhesive, these labels act as a steadfast veil over unwanted text or images, ensuring the information remains blocked even under scrutiny.

Request a quote Request a sample

Our blockout (cover-up) labels are:

Customisable

Resistant to

Suitable for

Adhesive

High opacity 'blockout' adhesive for thorough concealment

Permanent solvent acrylic adhesive for long-term adhesion

Label Material Options

Durable, paper-based material suitable for general lab usage and freezer storage

Metallised polyester for a completely opaque solution, ensuring underlying content remains unseen

Printing Options

Laser and thermal printing compatibility for versatile in-house label production

Pre-printed labels furnished with essential data for immediate application

Partially printed labels for flexible, on-demand customisation

A range of temperatures, performing reliably in environments as cold as -30°C

General wear such as mild abrasion and handling, preserving the legibility of the cover-up

Moisture and humidity, ensuring stability during storage and transportation

Labs and pharmaceutical companies requiring concealment of sensitive patient data or ingredients

Industrial use for covering outdated branding or accreditation details without harsh durability requirements

Clinical blind or double-blind studies to reduce or eliminate experimental bias

Freezer storage applications down to -30ºC, offering flexibility across various storage conditions

Correcting printed errors or outdated information on pre-labelled products

COMPATIBLE WITH MAJOR BRANDS INCLUDING:

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We know that cost is an important factor.
Let us provide you with a quote for the labels you need, with no obligation to buy.

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Want to see for yourself?
Try before you buy?
Let us provide you with free samples.

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ISO
ACCREDITED

98% CUSTOMER
SATISFACTION RATING

MANUFACTURING
SINCE 1987

Client Testimonial

"Thank you for the rapid completion of my order. Labels look great. Many thanks for your excellent service.”

Dr Paul M
Diagnostic Project Leader

Our Complete Customer Care Approach

At CILS, we believe in going the extra mile for our valued customers. We deliver more than just labels.

We make them well and we make them work, for you.

Find out more

We are computer printable label specialists. Pure and simple.

With nearly 40 years of expertise, our tried-and-tested approach will diagnose the right label for your unique needs. We have built our reputation on consistently creating the highest quality durable labels with excellent customer feedback.

Your enquiry

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Tick here if you’d like to receive communications from us. Don’t worry - we promise that we won’t bombard your inbox with emails. Instead, we’ll only contact you with information that we genuinely feel is of interest. We also promise that won’t ever share your details with any 3rd party. If you’d like to find out more, please check out our Privacy Policy.

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Know What You Need?

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Tick here if you’d like to receive communications from us. Don’t worry - we promise that we won’t bombard your inbox with emails. Instead, we’ll only contact you with information that we genuinely feel is of interest. We also promise that won’t ever share your details with any 3rd party. If you’d like to find out more, please check out our Privacy Policy.

By submitting this form, you agree to our Terms and Conditions, along with our Privacy and Cookie Policy. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Durable, printable labels for what matters in your industry

Durable, printable labels for what matters in your laboratory

Who we are, what we do, how to join

For pricing, samples or guidance, let's get started

Industrial

Laboratory

Durable, printable labels for what matters in your industry

Durable, printable labels for what matters in your laboratory

For pricing, samples or guidance, let's get started

Industrial

Laboratory

Blockout masking Labels

Our blockout (cover-up) labels are:

Adhesive

Label Material Options

Printing Options

COMPATIBLE WITH MAJOR BRANDS INCLUDING:

Request quote

Want a sample?

Client Testimonial

Our Complete Customer Care Approach

Durable, printable labels for what matters in your industry

Durable, printable labels for what matters in your laboratory

Who we are, what we do, how to join

For pricing, samples or guidance, let's get started

Industrial

Laboratory

Durable, printable labels for what matters in your industry

Durable, printable labels for what matters in your laboratory​

For pricing, samples or guidance, let's get started

Industrial

Laboratory

Blockout masking Labels

Our blockout (cover-up) labels are:

Adhesive

Label Material Options

Printing Options

COMPATIBLE WITH MAJOR BRANDS INCLUDING:

Request quote

Want a sample?

Client Testimonial

Our Complete Customer Care Approach

Durable, printable labels for what matters in your laboratory